Camera with film wind and shutter set interlock



Jan. 5, 1954 L. A. WILKINSON 2,664,799

CAMERA WITH FILM WIND AND SHUTTER SET INTERLOCK Filed July 29. 1949 6 sheets sheet 1 11 n, w m- Fig. 4 //v v5 TOR Leonard A. Wilkinson A f forneys Jan. 5, 1954 L. A. WILKINSON 2,664,799

CAMERA WITH FILM WIND AND SHUTTER SET INTERLOCK 6 Sheets-Sheet 2 Filed July 29, 1949 //v vew TOR L eopara' A. Wilkinson CAMERA WITH FILM WIND AND SHUTTER SET INTERLOCK Filed July 29, 1949 Jan. 5, 1954 L. A. WILKINSON 6 Sheets-Sheet 3 s ww v 0 Wm W M mu m 8 W p. r A 9 d 0 W I, m w J Y m a 4.93 4 20 8 8 Wu w; 7- 2 a m 2 /9 m m m8 m 7 mt B 9 M m Wu Jan. 5, 1954 L. A. WILKINSON 2,664,799

CAMERA WITH FILM WIND AND SHUTTER SET INTERLOCK Filed July 29. 1949 6 Sheets-Sheet 4 //v VEN ran Leonard A. wilk/hson A Homers I80 A I37 [8/ 135 04 84 I42 I I, [22 5;: K /32 I28 I43 I09 W a 758 [3/ Q /57 T /7a /49 94 wsj I46 d] g 1 1 /05 (Q) I 748 Jan. 5, 1954 CAMERA WITH FILM WIND AND SHUTTER SET INTERLOCK Filed July 29, 1949 L. A. WILKINSON 6 Sheets-Sheet 5 Y tIIIII IIIIIIIIi III i!!! //vv/v r01? Leonard A. Wilkinson A/M W W Attorneys Jan. 5, 1954 L. A. WILKINSON CAMERA WITH FILM WIND AND SHUTTER SET INTERLOCK Filed July 29, 1949 Fig. 2/

T l M E O O l N O O 4 6 Sheets-Sheet 6 45 F lg. 22

VE/V 70/? Leonard A. Wi/k/nson Attorneys Patented Jan. 5, 1954 UNITED STATES; GFFICE CAMERA'WITH FILM 'WIND AND; SHUTTER SET YINTERLOGK:

Leonard A.'WilkinsomAnn Arbor,-Mich.,-assignor to Argus Cameras; 1110., Ann" Arbor-,--Mich.; a-

corporation of Michigan Application July 29,1949, Serial N0..107,519

6 Claims: (Cl. 95 31) This invention relates to cameras and is more particularly directed to'novel shutter andjassociated control mechanism and details, ofgeneral. construction .of cameras.

The invention herein described comprises a wholly new camera having. a reflex finder-and incorporating for the first time to my knowledge in a low price camera a reliable film feed and shutter interlockfor preventingdouble exposures.

It is the major object of my inventionito'prm vide anovel camera assembly whereinthe camera vbody, the film feed control and shutter mechanism support, and thefront cover assembly which includes thefinder are all assembled in novel relation.

Itjisa furtherobject of my. invention to provide a cameraembodying novelly associated shutter and film feed mechanisms whereby when an exposure has been made .the shutter mechanism,

is locked against further operation until the film has again been advanced.

It isa further object of my invention to provide a novelcover blade type camera shutter mechanism.

It is a further object of my inventiongto provide a novel camera sub-assembly wherein the. shutter and associated control mechanism are mounted on a member adapted to, be. removably secured tothe interior of the camera body.

A further object of my invention is to provide a novel mechanism for controlling a cover blade type shutter including annoperative connection with the film wind member of thecamera.

It is another object of. my invention to provide a novel shutter control mechanism for preselecting instantaneous or time exposure operationin a camera.

Further objects of the invention will presently appear as the description proceeds in connection with the appended claims and the annexed drawings wherein:

Figure 1 is a front elevationof a .camera constructed according to a preferred embodimentof the invention;

Figure 21s .a top plan,.view of {the camera of 1 Figure 1 with the finderhood open;

Figure ,3 is a side elevation of the camera of Figure 1;

Figure 4 is a top plan view of :the bodyycasing of the camera of Figures 1-3, with the'finder parts and .the back cover 'removed'to show-its internal construction;

Figure 5 is an enlarged section substantially through the middle of the camera illustratingfdetails of the body construction as 'well as certain details of the shutter and film feed interlock;

2" Figure 5A is a fragmentary view illustrating the timepstop lever;

Figure 6 is a rear elevation of the camera with the 'backjvcover removed;

Figure 7 is. a front elevation of the camera with.

the lens board removed to illustrate the shutter and associated ,partsias they appear after an exposure has beeumade;

Figure 8 is atop .plan view ofthe support upon Y which the shutter and shutter control mechanism. .are built: in a sub-assembly;

Figure ,9 Y is a. bottom. plan .view. of the shutter support sub-assemblyoffl Figure 8 illustrating particularly the arms for holdingthe supply film rol Figure-.10, is afragmentary top plan view of the shutter linkage and vparticularly illustrating the photo-flash, synchronization, switch .in the assembly; v

Figure 11 is,,, a ,i side. -elevation of the subassembly .of FigureB illustrating the position of the parts :after, the film hasbeen wound to cock the shutter;

Figure 12 is a front elevation of the subassembly of gFigure-fi illustrating-the position of the shutter parts that correspond to v the. shutter cocked. position of Figure '11;

Figure --13: is asfragmentary front elevation i1- lustrating-the-position of the parts as the cover blade moves totrip:the--shutter-blade in making an instantaneous exposure;

Figure 14,--is ;a side elevation of the subassemblysimilar to Figure-11 but illustrating the Figure 19 is=a=side elevation of the' time stop:

lever;

Figure '20 is a 'top elevation of the time stop lever.

Thecameraacoording to thepreferred embodiment of theiinvention comprises av main casing or body I I which is preferably a molded phenolic condensation product or other plastic that is closed at the bottom and rear by a cover [2 pivoted to the lower end of front casing wall I 3 (Figure 5) by a suitable hinge l4. Cover l2 serves as the bottom and rear walls of the camera and its side edges are internally grooved to fit light tight over edge ribs l5 (Figure 6) on adjacent walls of the camera when the cover is closed.

A light baflie plate It (Figure 5) is secured all along the inner lower edge of cover l2 adjacent hinge I4 and extends into an internal recess I! in the lower end of wall ii) to block light that may pass through the hinge when cover I2 is closed. A spring latch plate l8 has one end riveted or similarly anchored to the upper part of cover l2 and provided with an aperture [9 adapted to fit over a spring plate mounted keeper pin 2! when cover I2 is closed to latch the cover in closed position. The upper end of plate I8 is turned over at 22 to provide afinger piece for releasing the latch when cover I2 is to be opened.

The rear wall of cover l2 has an aperture (Figure 5) covered by a red filter 23 through which the usual indicia on the back of the film may be observed, and a suitable resilient film presser plate 24 is secured to the interior of cover l2 to maintain the film flat at the exposure aperture. A suitable tripod attachment socket 25 is provided on the bottom wall of cover l2.

Front casing wall is is formed (Figures 5 and 7) with a shallow rectangular recess 26 that is open at its top as illustrated in Figure 7, and within this recess wall I3 is formed with an upper opening 21 for the finder light path and a lower opening 28 for the picture taking light path and the associated shutter mechanism. 7

Recess 26 receives a lens board 29 (Figures 5 and 16) which is formed with an upper boss 3i containing the finder objective lens 32 and a lower boss 53 containing the main picture taking or objective lens 34 of the camera. Lens 32 is mounted on a shoulder in boss 31 by a suitable pressed-in rear retainer ring 35. Lens 34 (Figure 1'?) is mounted in a removable cell assembly that comprises a sheet metal cup 36 containing lens 34 and an annular spacer 31. An integral flange 38 at the inner end of boss 33 is formed with a circumferential series of openings 39 for receiving tongues 4! on the rim of cup 36, so that the lens, spacer and cup assembly may be inserted through the front of boss 33 until tongues 4! enter openings 39 and spacer 3! is pressed against fiange 38, whereupon tongues M are bent over as illustrated in Figure 17 to secure the lens cell to the lens board. Thus both front lenses of the camera are mounted in a separable subassembly.

The finder cap and front plate subassembly is also preferably separately constructed. This comprises a finder cap 42, which is preferably a generally rectangular molded plastic frame, and a decorative front plate'43 of light sheet metal like aluminum that has its upper end turned over and secured to cap 42 as by screws 44 (Figure 5). Plate 43 extends downwardly at right angles to cap 42. An elongated aperture 45 is formed in plate 43 to clear the lens board bosses in the final assembly as illustrated in Figure 1.

As illustrated in Figure 2, finder cap 42 is formed with a rectangular central opening 46 surrounded at its bottom by a recessed shoulder 41 that seats upon the finder view lens 48 (Figure 5). Cap 42 is also formed with parallel through slots 49 and 5| on opposite sides of opening 46. In the camera assembly, a depending rim on finder cap 4-2 fits within an opening 54 (Figure 4) in the top of easing H, and at its rear rim 52 is interrupted to provide a flat face adapted to seat on a corresponding flat face 55 (Figure 4) on the casing.

Within casing H, a stepped forwardly and downwardly inclined integral wall 56 (Figure 5) separates the upper finder compartment from the lower shutter compartment and joins front wall I3 below opening 21. Two internal walls 51 and 58 (Figure 4) parallel to the camera side walls extend integrally up from wall 56 and define two sides of an opening 59 having a recessed shoulder 6| adapted to seat a finder view lens spring frame 62.

A horizontal finder view lens 48 mounted upon frame 62 is optically aligned with lens 3'! in the assembly, a reflector 64 being cemented upon wall 56 at forty five degrees to the entering light path.

A finder view lens hood 66 having integral side walls 61 and 68 extending through slots 49 and 5i is suitably pivoted upon cap 42. When the hood is in closed position, the hood side walls descend into the spaces between walls El and 58 and the sides of easing ll. 7

The casing H, lens board 29 and finder and hood assembly are assembled together readily and easily. First, the lens board 29 is seated in recess 26. Then the finder cap 42, with the hood assembled on it, is placed on the top of the casing with openings 45 and 59 in registry. Two screws 16 (Figure 2) rigidly secure cap 42 to casing ll. When screws 15 are drawn tight lens 48 is clamped in its resilient seat between cap 42 and the casing. The front plate 45 covers the lens board except where the bosses project forwardly through aperture 45. Four screws i1 (Figure 1) extend through the front plate and lens board to secure both tightly to casing II.

The above construction permits easy and speedy disassembly of the lenses and finder for repair, cleaning and replacement and the parts are readily assembled together again in exact alignment.

The shutter mount is a subassembly that correctly locates the shutter with respect to the optical axis of lens 34 and is removably attached to casing II. This shutter mount comprises a light tight tubular support member 18 shaped like a truncated pyramid. It is preferably of molded plastic and has a large substantially square rear opening 19 (Figure 6) and a wall 8| across its smaller front end. Centrally and forwardly projecting from wall 8! (Figure 8) is a frusto conical boss 82 having an aperture 83 which is the exposure aperture to be controlled by the shutter.

The shutter, later to be described, is mounted on the front of wall 8| within a recess bounded by a flange 84. The entire shutter mount 18 is secured to the casing II by three screws 85 (Figure '7) which are disposed below the level of the lens board and pass through wall l3 into suitable threaded bores. in flange 84. The shutter mount 18 therefore must be attached to the casing ll before lens board 29 is placed in recess 25 in this embodiment.

For guiding shutter mount 18 into proper assembly with casing II, the latter is formed with upper internal side wall notches and ill (Figure 6) for guiding ribs'88 and 89 respectively on the shutter mount. Also at a lower level casing I! is formed with two internal side wall recesses 5i and; 92: to receive .and guide -two spring tabs 93 and .94 projecting from-.the. sides. of mount :18; Preferably tabs :93;an.d .94 are. integral. extensions of.metal; plates 95 and .96respectively riveted to the .sidesof mount .18 .andhaving-integral .i'orwardly projecting spring arms 9? and99 for holdbelow the .leveljof. the-recessed filmtrack I03 .in' Aprons I94 therearface of shutter mount 18.. and I05 SBClllGdltO :mount .18 project forwardly ab'ove arms. 91 and 98 and shieldzthe shutter mechanism, later to be described; from the supply film:

rollin :clip I00.

The shutter assembly comprises a shutter blade I06 having an elongated aperture I01 and swingable. about a pivotpin lilfl onwall 8i. A cover blade I09'having an aperture III is also pivoted onrpin" IOB'inoverlying relation tothe shutter blade. Figures 5 and? illustrate the parts in the relative positions they occupy after an exposure has been made and before a fresh area of film has beenadvanced into the exposure aperture. An'area II of the front surface of cover blade I99 is colored red to serve as an indicator of the shutter and film feed condition as will appear.

A spring II2 anchored to wall 9I at one end and attached at its other end to a tab H3 on shutter blade I96-constantly urges the shutter blade counterclockwise. The engagement of tab II 3 with boss 82 or some other equivalent stoplimits such counterclockwise movement of shutter blade I06-and stops thelatter with the opaque portion II4 over aperture 83.

A spring II5 anchored to wall 8I at one end is attached at its other end to a tab II6 projecting from cover blade I99 and constantly urges blade I69 counterclockwise. A cover blade lever comprising a bell crank II! is pivoted at II8 to wall 8|. A connector link H9 is pivotally connected at opposite ends to arm 'I2I of the bell crank and tab II6 of the cover blade. Engagement of link II9 with boss 82 or an equivalent stop serves to stop such counterclockwise rotation of the cover blade.

A shutter blade latch I22 is pivoted intermediate its ends to wall BI at I23. At one end latch I22 carries a tab I24 attached to one end of a spring I25 that has its other end anchored on wall BI and constantly urges latch i22 counterclockwise about its pivot. A projection E26 formed onlatch I22 provides. a safety stop facecoacting with. a .tab I2! on the rim of shutter blade I96 for preventing return of the shutter blade from the cooked position of Figure 12. Outwardly of projection I26 on latch I22 is an inclined cam face E36 adapted to be engaged by tab I2? during cooking of the shutter to slightly rock latch I22 clockwiseand permit tablil to pass beyond the projection I26, the spring I25;

returning to latch" to blade arresting position after tab I21. has passed the stop projection.

Cam tab I28 on the latch is adapted to be engaged by a tab I29 projecting from the cover blade I09 during counterclockwise rotation of. the cover blade to trip the latch I22 and release the shutter blade during operation as will appear. I

A tab I3I projecting inwardly from the periphery of cover blade I09 is adapted to engage and .pick up the shutter blade. I66 when bell crank. I I! is rocked :durinathaclockwise cocking operation;

The shutter: is; set or lcocked by rocking bell crank I I'Iicounterclockwis'eein Figure .;12. Arm- I32..0f:.the bell crank projects beyondithe edge of wall.8I: and .israpertured at I33 jtoreceivezthe tip of .a:;.lever: I34 pivoted rat I35ionmount I6.

leverv I3'l into .a vertically elongated .slot I38 formediin'the-rear endof lever I34 which is also provided. with an upstanding projection I39. A tensionspring I M. resiliently interconnects :the

upper end of projection-I 39 withipin I36 to permit lost motion or overtravel consisting: of :relative vertical movement betweenthe reset pawl I31 and lever I 34 during operation for a purpose to appear.

A tensionspring I42,: connected at: opposite.-

ends toa projection I43 on pawl "I31 and. an

anchoronimountI8;::constantly tends to swing pawl I 31 clockwise "into-the position illustrated in Figurefi. This spring-I42 is the main shutter spring.

A shutter latch I44 slotted at I45 "for sliding movement on a stationary pin I46 projects slidably through a slot I41 in flange extension I48 to terminate in a button I49 that projects throughan aperture I5I of wall I3 to be available to theoperator. A'spring I52 anchored at one end to mount 18 has its otherend attached to a projection' I on latch I44 for constantly .pulling'the latch to the'right in Figure 5.

At its rearend, latch-I44 is formed withan outwardly turned lip I53 having-a flat front face I54 and a bottom edge I 55. The lower end of re-' set-paw1I3I has an inturned bottom lug I56 adapted to lie in contact with face I54 when the parts are in the position of Figured Above lug I56 'is-an inturned'lug I5! adapted to contact face 154 when'the parts arein'the position of Figure 11 as will appear.

Provision is made for taking either instantaneous or time exposures. A time stop lever I58 is loosely pivoted on the shutter mount inwardly of-the shutter latch I44 and is constantly biased clockwise by a'tension'spring I59 anchored at one end to the support. Lever I58 is formed-with a depending arm I6I in sliding contact with an inwardly turned. lug I62 on shutter latch I44. The other end of lever I58 is bent at right angles around the-edgeof wall 8| to provide a front When latch I44 is abutment I63 (Figure 12). moved inwardly to make an exposure as will appear, this moves arm I6I rearwardly and permits spring I59 to rock lever I58 clockwise thereby moving abutment I63 downwardly and outwardly to intercept lug I21 on the shutter blade and thereby stop the shutter blade with opening I81 over exposure aperture 83 for a time exposure as illustrated in Figure 15. When the operator takes his finger off button I49 to permit the shutter latch to be spring urged outwardly to its original position, lug I62 on the shutter latch positively rocks abutment I63 out of the path of the shutter bla'de'with a camming action permitted by the shutter spring! I2. This operation constitutes a time exposure.

When an-instantaneous exposure is desired,

provision. is'made for preventing. abutment I63 Figures 18-20) by introducing astop arm I64 into abutment with abutment I63 so as to prevent clockwise rocking of .lever I SIB-when the latch I44 is moved inwardly. a Stop arms-I 64 is.- an integral A. pivot. pin-136 projects from anuprightreset'pawl;

inward extension of a slide member I65 mounted for slidable movement in a narrow front surface recess I66 on lens board 29 and which is confined in that recess by overlying front plate 43. Arm I64 extends through slot I67 (Figure 18) into the shutter mechanism space to engage abutment I63. As illustrated in Figure 1, front plate 43 is provided with indicia I68 and I69 marked time and instantaneous exposures respectively. Slide member I65 is also formed with a pointer projection I'I'I that extends laterally into a surface recess I72 on the casing II and then outwardly and back across the front face of plate 43 to coact with either indicia.

When the parts are in such position that pointer MI is opposite lower indicia I69, the stop arm I64 is in position to engage abutment I63 and thereby arrest rocking movement of lever I58 to permit an instantaneous exposure. When the pointer I7! is moved up opposite indicia I68, stop arm I64 is moved above abutment I63 to permit rocking of lever I58 in making a time exposure as above explained.

A switch for energizing a flash lamp in synchronization with the shutter action is provided in'the assembly. This switch comprises a fixed contact I73 (Figures 8 and 10) riveted on the shutter mount and having a projecting spring blade I74. A contact member I75 (Figure is slidably and pivotally mounted by a pin and slot connection I76 upon an upstanding arm I77 on latch I44. A tension spring I78 attached between the lower end of member I75 and arm I77 normally urges contact member I75 upwardly. An inwardly turned blade I79 extends from the top of member I75 above the top of spring blade I74 so that when the parts are in the position of Figures 5 and 7 the contact blades are separated.

During the shutter setting operation there is no vertical movement of latch I44 and hence no change in the separated relation of the contact blades I74 and I79, so that there can be no accidental flash of the lamp. An inwardly projecting lug I8I (Figures 8 and is formed on the metal reset pawl lever and lug I8! is adapted to engage the top of contact member I75 and move it downwardly against the opposition of spring I78 until blades I74 and I79 are in contact during the exposure operation. Stationary contact I73 is suitably connected to one terminal of a socket in the side of the camera for attachment of a flash lamp holder, and either contact I75 or the reset pawl lever are connected to the other terminal of the socket. The entire contact member I75 moves bodily inwardly with latch I44 when button I49 is pressed to make an exposure, thereby moving member I75 into the path of the descending lug I8I, and when the operator releases button I49 the latch I44 is moved outwardly by spring I52 and carries with it the contact member I75, which latter is moved out from beneath lug I8! to permit spring I78 to separate the contact blades. Consequently there is no closure of the switch during shutter setting, and the switch blades are immediately automatically separated after exposure.

The upper end of reset pawl I 37 is formed with a tooth I82 adapted to engage a ratchet wheel I83 fixed to a unidirectional rotatable shaft or take-up spindle I84 that projects through the side wall of casing II to terminate in a manual knob I85. The inner end of shaft I84 is shaped in the usual manner to interfit with a spool upon which the film is wound. When knob I85 is turned to rotate ratchet wheel I83 clockwise in Figure 5,

pawl I 37 is moved downwardly, lug I56 sliding along face I54 until it clears the lower edge I55. At this time the engagement of ratchet wheel I83 with the relatively long tip I90 of the pawl I37 cooperates with spring I42 to swing the entire pawl I37 clockwise about pivot I36 to seat lug I56 under edge I55 and disconnect tooth I82 from wheel I83, as illustrated in Figure 11.

Figures 5 and 7 illustrate the shutter and film mechanism parts in the positions they occupy preliminary to winding the film and setting the shutter. Pawl tooth I82 is engaged with ratchet wheel I83 and lug I 56 is urged against latch face I54 by spring I42. Latch I44 is urged to its outermost position by spring I52. The shutter and cover blades are in their extreme counterclockwise position and signal area II 8 is not visible through lens 34.

In order to set the shutter and wind the film the operator simply rotates knob I clockwise. As above explained, this moves pawl I37 down until the combined actions of the ratchet wheel and tensioned spring I42 swing the pawl clockwise and lodges lug I56 under edge I55 of latch I 44. This action also disconnects the pawl I37 from ratchet wheel I83 as illustrated in Figure 11 so that further turning of the knob I85 necessary to wind the film the proper distance has no effect on the shutter setting mechanism. A stop pin I 88 limits the swing of pawl I37. This downward movement of pawl I37, through the connection provided by pin I36 and spring I4I, rocks lever I34 counterclockwise about pivot I35 and thereby rocks cover blade lever I I7 into the position illustrated in Figure 12 where signal area H8 is visible through lens 34. Both the shutter lade and cover blade are thereby rocked as a unit from the Figure '7 position to the Figure 12 position without uncovering aperture 83. Springs H2, H5 and I42 are all tensioned during this movement and the parts are retained in this position by the lock of lug I58 under latch edge I55. Should the lever I 34 and the shutter reach reset position before lug I56 has moved down to the level of edge I55, slot I38 permits pin I36 to move down against the tension of spring I4I and make the necessary overtravel.

The shutter is now set for either instantaneous or time exposures. If instantaneous exposures are desired, pointer IN is moved down to index I69 thereby placing stop I64 in the path of time stop lever I58 and rendering lever I58 inoperable.

After sighting through the finder the operator presses button I49 to make the exposure. Inward movement of latch I44 moves edge I55 past lug I56 to release pawl I 37 and enable shutter drive spring I 42 to pull the pawl upward along face I54 and rock lever I34 clockwise. When the operator releases the head I49, outward movement of latch I44 restores pawl tooth I82 into contact with ratchet I83. Cover blade lever H7 is rocked counterclockwise by lever I34 to enable counterclockwise rotation of cover blade I89 by spring I42 aided by spring H5. The chief function of the considerably lighter spring H5 is to take up mechanical play in the linkage. Shutter blade I06 starts to follow the cover blade under the influence of spring I I2, but is immediately stopped by the engagement of tab I27 with stop I26 of latch I22, with opening I87 over aperture 83.

As cover blade I99 continues to move counterclockwise, this transient condition being illustrated in Figure 13, its aperture I I I moves across the aperture 83 to make the exposure. At the same'time, engagement of tab I29'with latch cam I28 "releases theshutter I06 to complete its counterclockwise travel under the infiuence of spring H2. The parts stop with the exposure aperture covered by blade I06 as in'Ffigurefi, and 'with' cover blade aperture III aligned with apertu1e33.

In order tomake a fresh exposure the'knob I85 is turnedagainwhile' the operator watches the numbers on the backof thefilm through-window this. frees lever I58 to rock under theinfiuence" of spring I59 when button Hit is pressedinwardly. The operation of the shutter and cover. blades is substantially the same as foran instantaneous exposure, with the exception that, whilecover blade Hi9 moves as before to its extreme counter clockwise position to stop with aperture. III aligned with aperture 83, shutter blade I06 is stopped with the exposure aperture uncovered, by engagement of lug l2! with abutment. I63 of the time stop lever. This condition prevails, until" the operator releases latch IM which rocks lever I58 to remove abutment I63 from the path of shutter blade I06 andthus enables the shutter blade to complete its movement and terminate the exposure.

During both of the above types of exposure, the contacts I14 and I19 are closed when the exposure aperture 83 is fully open.

The camera of the invention is compact and easy to assemble and repair. Double exposures are preventable. The operator, by a glance through lens 34, can tell whether he remembered to advance the film after the last exposure.

The invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

What is claimed and desired to be secured by United States Letters Patent is:

1. In a camera, a pivoted shutter control part, a pivoted lever operatively connected to said part, a member movably mounted with respect to said lever, a manually releasable latch in the path of movement of said member, a unidirectionally rotatable film wind spindle, said member having in one position one end operatively connected to said spindle and its other end disengaged from said latch, and having in another position said one end operatively disconnected from said spindle and said other end engaged with said latch, means including coacting parts on said member and spindle for moving said member into said other position to be retained by said latch when the spindle is rotated and for operatively disconnecting said spindle and member when said member has been so latched, means connecting said lever and member for rocking said lever in shutter setting direction when said member is so moved by the spindle, and a spring connected to said lever for rocking said lever in the other direction to actuate said shutter control part to trip the shutter when the latch is released.

2. In a camera, a pivoted shutter element, a pivoted bell crank connected at one end to said element, a pivoted lever operatively connected to [shutter setting direction when s'aidmember is. so -m'ovedby thespindle, and a spring connectedv to I the otherend of saidbell crank, a member movably, mounted adjacent said lever, a manually releasable latch, a unidirectionall rotatable film wind spindle, meansincluding coacting partson said member'and spindle for moving said member into position .to' be retained by. said latch when (the. spindle is rotated and for operatively disconnecting said spindle and member when said memberhas been so latched, means interconnecting said lever and member for rocking. said lever in saidflever for rocking said lever in the other direction to actuate said'bell crank andtrip the 151 fshutter when the latch is released.

3. In a camera,- a pivoted shutter control part, a pivoted lever operatively connected to said part, a pawl having. a spring biased lost motion connection with said lever, a manually releasable latch, aunidirectionally rotatable film wind spin- 'dle,.means including coacting parts on said pawl and. spindle for moving said pawl into position to bev retained, by said latch when the spindle is rotated-and. for, operatively disconnecting said 25.

spindle andfpawlwhen the pawl has been latched, said connection between said lever and pawl rock- ..ing said leverin shutter setting direction when said pawlismoved by the spindle,.and a spring connected to said lever for rocking said leverflin the other-direction to actuate said shutter control part to trip the shutter when the latch is released.

4. In a camera, a pivoted shutter element, a pivoted lever operatively connected to said element, a member movably mounted adjacent said lever, a manually releasable slidable latch positioned in the path of movement of said member, a unidirectionally rotatable film wind spindle, said member having in one position one end operatively connected to said spindle and its other end disengaged from said latch, and having in another position said one end operatively disconnected from said spindle and said other end engaged with said latch, means comprising coacting parts on said member and spindle for moving said member into said other position to be engaged and retained by said latch when the spindle is rotated and for operatively disconnecting said spindle and member when the member has been so latched, means connecting said lever and member for rocking said lever in shutter setting direction whensaid member is so moved by the spindle, and a spring connected to said lever for rocking said lever in the other direction to trip the shutter when the latch is released.

5. In a camera, a rotatable spindle, a shutter, mechanism for operably interconnecting said spindle and shutter for setting the shutter when said spindle is rotated to wind film on an associated spool comprising a pivoted lever connected at one end to said shutter, a slidably and pivotally mounted member shiftable between two positions and operatively connected to said lever, a shiftable latch for said member positioned in the path of movement of said member and having a manual operating portion externally of said camera, said member having in one position one end operatively connected to said spindle and its other end disengaged from said latch, and having in another position said one end operatively disconnected from said spindle and said other end engaged with said latch, coacting means on said spindle and member effective upon rotation of the spindle for moving said member to said other position to effect shutter setting rocking of said 6. In a camera having a shutter, a unidirectional rotatable spindle having a film spool connection, manual means for rotating said spindle to wind film on the spool, a spring biased lever slidably and pivotally mounted within said camera for movement between two operative positions, a shutter actuation control member slidably mounted in said camera for movement in a direction at an angle to said movement of said lever and having a manual operating part externally of the camera, a portion of said member within the camera lying in the path of movement of said lever, coacting latch elements on one end of said lever and on said portion of said member, coacting means on said spindle and the other end of said lever providing a disconnectible motion transmitting connection between said spindle and said lever, said lever in one of its said positions having said other end operatively connected to said spindle and the latch element at its said one 12 end disengaged from the coacting latch element on said member, and having in the other of its positions said other end operatively disconnected from said spindle and said one end positively latched to said member, movement of said lever between said two operative positions being effected by selective manual operation of said spindle and said shutter control member.

LEONARD A. WILKINSON.

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